Elaine got out of
bed at 4:00 in morning to come pick me up when my car broke down; a
friend in need is a friend indeed.
Blessing
in disguise
e.g.
I got closed out of
Dr. Johnson's math class last semester, but that turned out to be a blessing
in disguise because I had to take Dr. Adam's course, which I
really like.
Cut
and dried
e.g.
You shouldn't worry
too much about the lab final; everything covered on it is pretty
much cut and dried.
Die
is cast
e.g.
Beard may not like
the approach I took in my paper, but the die is cast;
I'll have to live with the consequences.
Dream
come true
e.g.
The new apartment
is very spacious and has fantastic view of the city skyline; it's
like a dream come true.